The Spray Bottle: What not to do

So, 2 days ago (day 10) I got a spray bottle.  I filled it with water, added a tiny bit of nutrients, adjusted the PH and sprayed the seedlings in my tray, thinking that they would want some fresh nutrients.  Several things happened after I did this.

The elephant garlic that I had planted a few days ago shot up out of the ground like a rocket.  All five cloves I planted have now sprouted healthily!

The lettuce seemed to love the spray solution and is flourishing in a big way.  I see transplanting them very soon.

And my Roma tomatoes, which were doing so well, are dying.  They are browning at the leaves and starting to shrivel.  I don't know if they will make it, but I am helpless to save them, so I guess I will wait and see.

Another plant which seems to dislike the spray treatment is my basil clone.  It has developed some nice roots as you can see, but the edges of the leaves are not looking so good now.  Ugh, I'm hoping this little gal pulls through this mess!

A strange green goo has also developed on top of some of my rockwool cubes.  It's pretty gross, but I asked the guy at Mr. Growitall hydroponics about it and he said it's nothing to worry about, so I'm not going to worry.

Bottom line.  Don't spray the seedlings!